Structural Design And Stress Analysis Of Multilayer Rotor Composites

As an efficient energy storage and conversion device,the energy storage flywheel system can converts energy into the kinetic energy of the rotor's high-speed rotation.It can also be used as a power source to deliver power to other equipment.This new type of energy storage method is better than the traditional energy storage method which has the advantages of high energy density,high energy conversion rate,environment friendly and fast charging and discharging speed.As one of the most important part of storage system,the performance of flywheel rotor directly determines the energy storage characteristics of energy storage flywheel system.In this paper,periodic representative volume unit of unidirectional fiber reinforced resin is established from the mesoscopic point of view,and the mechanical properties of the multilayer rotor composites are calculated to guide the structural design of the composite flywheel rotor.The mechanical properties of Kevlar fiber reinforced resin were predicted,and the structure of Kevlar composite flywheel rotor was designed.The stress changes of composite rotor with different amount of interference,different materials and different layers were analyzed.The ultimate speed of composite rotor is predicted,the rotor material and the interference parameter with excellent performance are selected to provide some reference for the structural optimization of composite flywheel rotor.